Meniscus lenses allow minimal spherical aberrations when a parallel beam enters the convex surface. This results in a minimum focal spot size for the incoming collimated light source. All meniscus lenses shown have positive focal lengths. Negative focal lengths are available upon request.
All series LM lenses are coated and optimized for use at 10.6 microns.
SPECIFICATIONS:
| Diameter Tolerance: | + 0.000″ / – 0.005″ |
| Thickness Tolerance: | +/- 0.010″ |
| Centering Tolerance: | 3 Arc Minutes Maximum |
| Sphericity: | < 1/40th wave at 10.6 microns |
| Surface Quality: | 40-20 Scratch-Dig |
| Focal Length Tolerance: | +/- 0.5 % |
| Absorption: | 0.25 % total |
| AR Coating Reflectivity: | R < 0.5 % at 10.6 microns |
| Catalog No. | Material | Diameter | Focal Length | Edge Thickness | Price | Order |
|---|---|---|---|---|---|---|
| LM-1015-Z-ET2.0 | ZnSe | 1.000" | 1.500" | 0.080" | $350.00 | |
| LM-1116-Z-ET2.0 | ZnSe | 1.100" | 1.648" | 0.080" | $330.00 | |
| LM-1125-A-ET1.88 | GaAs | 1.100" | 2.500" | 0.074" | $275.00 | |
| LM-1125-Z-ET3.0 | ZnSe | 1.100" | 2.500" | 0.120" | $260.00 | |
| LM-1135-Z-ET3.0 | ZnSe | 1.100" | 3.500" | 0.120" | $245.00 | |
| LM-1137-Z-ET4.0 | ZnSe | 1.100" | 3.750" | 0.160" | $230.00 | |
| LM-1150-Z-ET3.0 | ZnSe | 1.100" | 5.000" | 0.120" | $220.00 | |
| LM-1150-Z-ET6.0 | ZnSe | 1.100" | 5.000" | 0.236" | $235.00 | |
| LM-1175-Z-ET2.8 | ZnSe | 1.100" | 7.500" | 0.110" | $210.00 | |
| LM-1525-Z-ET3.0 | ZnSe | 1.500" | 2.500" | 0.120" | $340.00 | |
| LM-1538-Z-ET7.37 | ZnSe | 1.500" | 3.750" | 0.290" | $290.00 | |
| LM-1550-Z-ET6.0 | ZnSe | 1.500" | 5.000" | 0.236" | $275.00 | |
| LM-1550-Z-ET7.37 | ZnSe | 1.500" | 4.998" | 0.290" | $280.00 | |
| LM-1550-Z-ET9.0 | ZnSe | 1.500" | 5.000" | 0.354" | $395.00 | |
| LM-1575-Z-ET6.0 | ZnSe | 1.500" | 7.500" | 0.236" | $280.00 | |
| LM-1575-Z-ET7.37 | ZnSe | 1.500" | 7.515" | 0.290" | $275.00 | |
| LM-1575-Z-ET9.0 | ZnSe | 1.500" | 7.500" | 0.354" | $375.00 | |
| LM-1590-Z-ET7.37 | ZnSe | 1.500" | 9.000" | 0.290" | $270.00 | |
| LM-2050-Z-ET9.0 | ZnSe | 2.000" | 5.000" | 0.354" | $595.00 | |
| LM-2075-Z-ET9.0 | ZnSe | 2.000" | 7.500" | 0.354" | $600.00 |